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Diffstat (limited to 'arch/arm/mach-imx/iomux-v3.h')
-rw-r--r-- | arch/arm/mach-imx/iomux-v3.h | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/iomux-v3.h b/arch/arm/mach-imx/iomux-v3.h new file mode 100644 index 000000000000..2fa3b5430102 --- /dev/null +++ b/arch/arm/mach-imx/iomux-v3.h | |||
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1 | /* | ||
2 | * Copyright (C) 2009 by Jan Weitzel Phytec Messtechnik GmbH, | ||
3 | * <armlinux@phytec.de> | ||
4 | * | ||
5 | * This program is free software; you can redistribute it and/or | ||
6 | * modify it under the terms of the GNU General Public License | ||
7 | * as published by the Free Software Foundation; either version 2 | ||
8 | * of the License, or (at your option) any later version. | ||
9 | * This program is distributed in the hope that it will be useful, | ||
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
12 | * GNU General Public License for more details. | ||
13 | * | ||
14 | * You should have received a copy of the GNU General Public License | ||
15 | * along with this program; if not, write to the Free Software | ||
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, | ||
17 | * MA 02110-1301, USA. | ||
18 | */ | ||
19 | |||
20 | #ifndef __MACH_IOMUX_V3_H__ | ||
21 | #define __MACH_IOMUX_V3_H__ | ||
22 | |||
23 | /* | ||
24 | * build IOMUX_PAD structure | ||
25 | * | ||
26 | * This iomux scheme is based around pads, which are the physical balls | ||
27 | * on the processor. | ||
28 | * | ||
29 | * - Each pad has a pad control register (IOMUXC_SW_PAD_CTRL_x) which controls | ||
30 | * things like driving strength and pullup/pulldown. | ||
31 | * - Each pad can have but not necessarily does have an output routing register | ||
32 | * (IOMUXC_SW_MUX_CTL_PAD_x). | ||
33 | * - Each pad can have but not necessarily does have an input routing register | ||
34 | * (IOMUXC_x_SELECT_INPUT) | ||
35 | * | ||
36 | * The three register sets do not have a fixed offset to each other, | ||
37 | * hence we order this table by pad control registers (which all pads | ||
38 | * have) and put the optional i/o routing registers into additional | ||
39 | * fields. | ||
40 | * | ||
41 | * The naming convention for the pad modes is MX35_PAD_<padname>__<padmode> | ||
42 | * If <padname> or <padmode> refers to a GPIO, it is named | ||
43 | * GPIO_<unit>_<num> | ||
44 | * | ||
45 | * IOMUX/PAD Bit field definitions | ||
46 | * | ||
47 | * MUX_CTRL_OFS: 0..11 (12) | ||
48 | * PAD_CTRL_OFS: 12..23 (12) | ||
49 | * SEL_INPUT_OFS: 24..35 (12) | ||
50 | * MUX_MODE + SION: 36..40 (5) | ||
51 | * PAD_CTRL + NO_PAD_CTRL: 41..57 (17) | ||
52 | * SEL_INP: 58..61 (4) | ||
53 | * reserved: 63 (1) | ||
54 | */ | ||
55 | |||
56 | typedef u64 iomux_v3_cfg_t; | ||
57 | |||
58 | #define MUX_CTRL_OFS_SHIFT 0 | ||
59 | #define MUX_CTRL_OFS_MASK ((iomux_v3_cfg_t)0xfff << MUX_CTRL_OFS_SHIFT) | ||
60 | #define MUX_PAD_CTRL_OFS_SHIFT 12 | ||
61 | #define MUX_PAD_CTRL_OFS_MASK ((iomux_v3_cfg_t)0xfff << MUX_PAD_CTRL_OFS_SHIFT) | ||
62 | #define MUX_SEL_INPUT_OFS_SHIFT 24 | ||
63 | #define MUX_SEL_INPUT_OFS_MASK ((iomux_v3_cfg_t)0xfff << MUX_SEL_INPUT_OFS_SHIFT) | ||
64 | |||
65 | #define MUX_MODE_SHIFT 36 | ||
66 | #define MUX_MODE_MASK ((iomux_v3_cfg_t)0x1f << MUX_MODE_SHIFT) | ||
67 | #define MUX_PAD_CTRL_SHIFT 41 | ||
68 | #define MUX_PAD_CTRL_MASK ((iomux_v3_cfg_t)0x1ffff << MUX_PAD_CTRL_SHIFT) | ||
69 | #define MUX_SEL_INPUT_SHIFT 58 | ||
70 | #define MUX_SEL_INPUT_MASK ((iomux_v3_cfg_t)0xf << MUX_SEL_INPUT_SHIFT) | ||
71 | |||
72 | #define MUX_PAD_CTRL(x) ((iomux_v3_cfg_t)(x) << MUX_PAD_CTRL_SHIFT) | ||
73 | |||
74 | #define IOMUX_PAD(_pad_ctrl_ofs, _mux_ctrl_ofs, _mux_mode, _sel_input_ofs, \ | ||
75 | _sel_input, _pad_ctrl) \ | ||
76 | (((iomux_v3_cfg_t)(_mux_ctrl_ofs) << MUX_CTRL_OFS_SHIFT) | \ | ||
77 | ((iomux_v3_cfg_t)(_mux_mode) << MUX_MODE_SHIFT) | \ | ||
78 | ((iomux_v3_cfg_t)(_pad_ctrl_ofs) << MUX_PAD_CTRL_OFS_SHIFT) | \ | ||
79 | ((iomux_v3_cfg_t)(_pad_ctrl) << MUX_PAD_CTRL_SHIFT) | \ | ||
80 | ((iomux_v3_cfg_t)(_sel_input_ofs) << MUX_SEL_INPUT_OFS_SHIFT) | \ | ||
81 | ((iomux_v3_cfg_t)(_sel_input) << MUX_SEL_INPUT_SHIFT)) | ||
82 | |||
83 | #define NEW_PAD_CTRL(cfg, pad) (((cfg) & ~MUX_PAD_CTRL_MASK) | MUX_PAD_CTRL(pad)) | ||
84 | /* | ||
85 | * Use to set PAD control | ||
86 | */ | ||
87 | |||
88 | #define NO_PAD_CTRL (1 << 16) | ||
89 | #define PAD_CTL_DVS (1 << 13) | ||
90 | #define PAD_CTL_HYS (1 << 8) | ||
91 | |||
92 | #define PAD_CTL_PKE (1 << 7) | ||
93 | #define PAD_CTL_PUE (1 << 6 | PAD_CTL_PKE) | ||
94 | #define PAD_CTL_PUS_100K_DOWN (0 << 4 | PAD_CTL_PUE) | ||
95 | #define PAD_CTL_PUS_47K_UP (1 << 4 | PAD_CTL_PUE) | ||
96 | #define PAD_CTL_PUS_100K_UP (2 << 4 | PAD_CTL_PUE) | ||
97 | #define PAD_CTL_PUS_22K_UP (3 << 4 | PAD_CTL_PUE) | ||
98 | |||
99 | #define PAD_CTL_ODE (1 << 3) | ||
100 | |||
101 | #define PAD_CTL_DSE_LOW (0 << 1) | ||
102 | #define PAD_CTL_DSE_MED (1 << 1) | ||
103 | #define PAD_CTL_DSE_HIGH (2 << 1) | ||
104 | #define PAD_CTL_DSE_MAX (3 << 1) | ||
105 | |||
106 | #define PAD_CTL_SRE_FAST (1 << 0) | ||
107 | #define PAD_CTL_SRE_SLOW (0 << 0) | ||
108 | |||
109 | #define IOMUX_CONFIG_SION (0x1 << 4) | ||
110 | |||
111 | #define MX51_NUM_GPIO_PORT 4 | ||
112 | |||
113 | #define GPIO_PIN_MASK 0x1f | ||
114 | |||
115 | #define GPIO_PORT_SHIFT 5 | ||
116 | #define GPIO_PORT_MASK (0x7 << GPIO_PORT_SHIFT) | ||
117 | |||
118 | #define GPIO_PORTA (0 << GPIO_PORT_SHIFT) | ||
119 | #define GPIO_PORTB (1 << GPIO_PORT_SHIFT) | ||
120 | #define GPIO_PORTC (2 << GPIO_PORT_SHIFT) | ||
121 | #define GPIO_PORTD (3 << GPIO_PORT_SHIFT) | ||
122 | #define GPIO_PORTE (4 << GPIO_PORT_SHIFT) | ||
123 | #define GPIO_PORTF (5 << GPIO_PORT_SHIFT) | ||
124 | |||
125 | /* | ||
126 | * setups a single pad in the iomuxer | ||
127 | */ | ||
128 | int mxc_iomux_v3_setup_pad(iomux_v3_cfg_t pad); | ||
129 | |||
130 | /* | ||
131 | * setups mutliple pads | ||
132 | * convenient way to call the above function with tables | ||
133 | */ | ||
134 | int mxc_iomux_v3_setup_multiple_pads(iomux_v3_cfg_t *pad_list, unsigned count); | ||
135 | |||
136 | /* | ||
137 | * Initialise the iomux controller | ||
138 | */ | ||
139 | void mxc_iomux_v3_init(void __iomem *iomux_v3_base); | ||
140 | |||
141 | #endif /* __MACH_IOMUX_V3_H__*/ | ||
142 | |||